I have some plans to be on the move for a while. It is time to travel a bit. That made me think that one of those small pico projectors may be an interesting purchase to make. I have checked around the net but it is really hard to find some good comparisons and in most cases articles are a few years old. So considering the accumulated wealth of knowledge that is here perhaps I can pick your brains instead.

Some of my demands are

1) It should be small, no bigger than a large smartphone.
2) It has to provide decent lumens, I'm thinking I'll be using it late afternoon in hostels or cheap hotels, not always equipped with heavy curtains.
3) If high resolution provides better pictures on the wall, then bring it on.
4) Receive output from a smartphone (Galaxy Note)
5) Universal charger, no proprietary charge connectors

If you can think of anything else I ought to consider before making a purchase please point it out. I have never owned a projector and even if I've been trying to read up on it, I have a tendency to miss some major important points.

Moderately high lumens will mean quite a power requirement and a lot of heat generation. It might help if the source was limited to three wavelengths (RGB) and the image was rastorized. I would think it would be fairly straightforward to estimate a theoretical limit on lumens that would be possible with current sources, power sources, and heat dissipation. My guess is that this would be a difficult product to create that people would find acceptable.

Moderately high lumens will mean quite a power requirement and a lot of heat generation. It might help if the source was limited to three wavelengths (RGB) and the image was rastorized. I would think it would be fairly straightforward to estimate a theoretical limit on lumens that would be possible with current sources, power sources, and heat dissipation. My guess is that this would be a difficult product to create that people would find acceptable.

Moderately high lumens will mean quite a power requirement and a lot of heat generation. It might help if the source was limited to three wavelengths (RGB) and the image was rastorized. I would think it would be fairly straightforward to estimate a theoretical limit on lumens that would be possible with current sources, power sources, and heat dissipation. My guess is that this would be a difficult product to create that people would find acceptable.

Anyone see any chickens here abouts?

Don't these Pico projectors use LED lamps? I thought they were very energy efficient.

Moderately high lumens will mean quite a power requirement and a lot of heat generation. It might help if the source was limited to three wavelengths (RGB) and the image was rastorized. I would think it would be fairly straightforward to estimate a theoretical limit on lumens that would be possible with current sources, power sources, and heat dissipation. My guess is that this would be a difficult product to create that people would find acceptable.

Anyone see any chickens here abouts?

So would that be hot enough to fry a chicken on? Just kidding Poohbear.